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Virulence of South African isolates of Haemophilus paragallinarum. Part 2: naturally occurring NAD-independent field isolates.
Onderstepoort J Vet Res. 2002 Jun; 69(2):171-5.OJ

Abstract

Naturally occurring NAD-independent variants of Haemophilus paragallinarum, which have been isolates from poultry showing clinical signs of infectious coryza, were used to determine their virulence using a newly developed challenge model for infectious coryza. It was established that the NAD-independent isolates belonging to a particular serogroup, were less virulent when compared to the virulence of the NAD-dependent isolates from the same serogroup. It was shown that the virulence of the NAD-independent isolates belonging to serogroup C and serogroup A were very similar to each other. This differs to the results obtained with NAD-dependent isolates reported on previously, in which the serogroup C isolates were found to be more virulent then the serogroup A isolates.

Authors+Show Affiliations

Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa. BraggRR@Sci.uovs.ac.za

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12234004

Citation

Bragg, R R.. "Virulence of South African Isolates of Haemophilus Paragallinarum. Part 2: Naturally Occurring NAD-independent Field Isolates." The Onderstepoort Journal of Veterinary Research, vol. 69, no. 2, 2002, pp. 171-5.
Bragg RR. Virulence of South African isolates of Haemophilus paragallinarum. Part 2: naturally occurring NAD-independent field isolates. Onderstepoort J Vet Res. 2002;69(2):171-5.
Bragg, R. R. (2002). Virulence of South African isolates of Haemophilus paragallinarum. Part 2: naturally occurring NAD-independent field isolates. The Onderstepoort Journal of Veterinary Research, 69(2), 171-5.
Bragg RR. Virulence of South African Isolates of Haemophilus Paragallinarum. Part 2: Naturally Occurring NAD-independent Field Isolates. Onderstepoort J Vet Res. 2002;69(2):171-5. PubMed PMID: 12234004.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Virulence of South African isolates of Haemophilus paragallinarum. Part 2: naturally occurring NAD-independent field isolates. A1 - Bragg,R R, PY - 2002/9/18/pubmed PY - 2002/12/10/medline PY - 2002/9/18/entrez SP - 171 EP - 5 JF - The Onderstepoort journal of veterinary research JO - Onderstepoort J. Vet. Res. VL - 69 IS - 2 N2 - Naturally occurring NAD-independent variants of Haemophilus paragallinarum, which have been isolates from poultry showing clinical signs of infectious coryza, were used to determine their virulence using a newly developed challenge model for infectious coryza. It was established that the NAD-independent isolates belonging to a particular serogroup, were less virulent when compared to the virulence of the NAD-dependent isolates from the same serogroup. It was shown that the virulence of the NAD-independent isolates belonging to serogroup C and serogroup A were very similar to each other. This differs to the results obtained with NAD-dependent isolates reported on previously, in which the serogroup C isolates were found to be more virulent then the serogroup A isolates. SN - 0030-2465 UR - https://www.unboundmedicine.com/medline/citation/12234004/Virulence_of_South_African_isolates_of_Haemophilus_paragallinarum__Part_2:_naturally_occurring_NAD_independent_field_isolates_ L2 - https://medlineplus.gov/haemophilusinfections.html DB - PRIME DP - Unbound Medicine ER -